.container {
    height: 300px;
    width: 1000px;
    margin: 0 auto;
    background-color: rebeccapurple;
    vertical-align: middle;
}

header a {
    background-color: black;
    color: orange;
    text-decoration: none;
    margin: 50px auto 10px;
}

header {
    padding: 20px 20px;
    padding-top: 50px;
    margin-bottom: 50px;
    background-color: rgb(24, 125, 192);
}

.link {
    padding-top: 20px;
}

.A {
    width: 1000px;
    margin: 0 auto;
    background-color: rebeccapurple;
}

.D {
    padding-left: 100px;
    background-color: rebeccapurple;
    width: 400px;
    display: inline-block;
}

.C {
    padding-top: 20px;
    float: left;
    padding-left: 100px;
    width: 400px;
    background-color: rebeccapurple;
    display: inline-block;
}

.B {
    width: 1000px;
}

p {
    width: 300px;
}

.E {
    vertical-align: middle;
    width: 300px;
    padding: 20px;
}